News Summary

• Rechargeable devices typically use lithium-ion batteries.
• Dropping below 20% can destabilize the chemistry.
• Thermal stress permanently slashes a device's maximum battery capacity.
• Protecting your gadgets from overheating is the absolute best way to make sure they survive for years to come."The 80-20 rule" is a charging strategy designed to squeeze every ounce of longevity from the rechargeable batteries in your modern electronics.
• The concept is straightforward: keep your battery level between 80% and 20%.